• Title/Summary/Keyword: Heuristic evaluation

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An Study on Usability Evaluation of Image based SNS (이미지 기반 SNS의 사용성 평가 연구)

  • Lee, Mi Gyung;Park, Jin Wan
    • The Journal of the Korea Contents Association
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    • v.16 no.8
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    • pp.508-516
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    • 2016
  • With the rapid development of Social Network Service and with the diversification of user needs, new types of image-based SNS have emerged. Image-based SNS provides customized service to meet users' specified contents needs that have yet to be satisfied in conventional relation-based SNS like Facebook, leading the trend of service diversification. Unlike text-based SNS that has inconvenient view on a small mobile screen, image-based SNS provides the communication way focused on simple text message and image, and thus the main users of the image-based SNS are young people in their 20s who get accustomed to images, rather than text messages. Accordingly, the functions and roles of SNS UI have varied, and usability has been more important. With the users in their 20s who use image-based SNS, this study tried to look into the usability of the image-based SNS. To do that, heuristic evaluation method was applied to find UI problems. The main factors constituting usability were extracted, and user evaluation method was redesigned. Aside from the satisfaction measurement, this study conducted and analyzed a questionnaire survey with users in their 20s who used actual image-based SNS. This study analyzed usability factors that influenced of image-based SNS users. The analysis results are considered to be used as a fundamental material to improve usability in the process of developing social media service.

Quick Order Acceptance Evaluation System with due dates in mold manufacturing factory (금형공장에서의 납기에 의한 신속 수주 평가시스템)

  • Lee, Moo-Seong;Rho, Hyung-Min;Lee, Soon-Yo
    • Journal of Korean Institute of Industrial Engineers
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    • v.20 no.4
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    • pp.181-192
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    • 1994
  • In an order-oriented production system such as mold manufacturing, the production starts with an order acceptance, and the production planning is set up according to the accepted order information. Such a work can be done through a dynamic process management system which can reflect shop floor situation dynamically. In this paper, so called the Quick order acceptance evaluation system that can investigate order confirmation quickly, is discussed. When an order is asked, this system must consider the time constraint to determine whether to accept or not, and must be reliable when the determined results are used in the shop floor. For this system, firstly, we simplified the machines by grouping based on their operation capabilities, secondly, we conducted load analysis to calculate available capacities during given periods using heuristic method instead of mathematical algorithm, thirdly, expert can input his experienced knowledge into the system interactively when simulation results don't meet the required due dates. As a case study, we applied this system to an injection mold manufacturing factory.

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Performance Evaluation of Vehicle Routing Algorithms in a Stochastic Environment (Stochastic 환경에서 확정적 차량경로결정 해법들의 성능평가)

  • 박양병
    • Korean Management Science Review
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    • v.17 no.2
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    • pp.175-187
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    • 2000
  • The stochastic vehicle routing problem (VRP) is a problem of growing importance since it includes a reality that the deterministic VRP does not have. The stochastic VRP arises whenever some elements of the problem are random. Common examples are stochastic service quantities and stochastic travel times. The solution methodologies for the stochastic VRP are very intricate and regarded as computationally intractable. Even heuristics are hard to develope and implement. On possible way of solving it is to apply a solution for the deterministic VRP. This paper presents a performance evaluation of four simple heuristic for the deterministic VRP is a stochastic environment. The heuristics are modified to consider the time window constraints. The computational results show that some of them perform very well in different cases of the stochastic VRP.

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A Comparative Analysis Usability Among Web Casting Sites (인터넷 방송 사이트의 사용편의성 비교 분석)

  • Lee Ja Mi;Byun Seong Nam
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.494-501
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    • 2003
  • Web casting has become an important opportunity to apply the user-centered concept to broadcasting because it provides real-time interactive service through time and space. It is also necessary to have a new understanding about user who is not a passive viewer any more but an active user. The amount and quality of contents are also important, but usability is a competitive factor as well as the fundamental customer services that have user best experience at the site. Nevertheless most of web casting sites show the low level of usability. In this study we had a comparative evaluation among these sites, MBC, KBS and SBS, which are the representative broadcasting systems. The tests were carried out as heuristic evaluation and usability testing. We analyzed causes and problems of web usability for customer satisfaction and reliability exaltation, and expected the basic knowledge of developing and improving sites.

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A Study on Performance Evaluation in Metal Cuttin System (금속 절삭가공 시스템의 성능평가에 관한 연구)

  • 황규완;김순경;황흥석
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.04a
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    • pp.689-693
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    • 1996
  • This paper was performed on the automatic selection of cutting condition on multispindle machine. the several mathematical relationships were formulated for simulataneous selection of machining parameters and tool changing scheme. In this research we used two step generative approach; step 1 is mathematical modeling for the selection of optimal cutting conditions and the other is GMDH-TYPE modeling to find prediction equation of system performance. thus in this paper, mathematical machining models combined with a heuristic GMDH-TYPE modeling to estimate the system performance, these models are developed computer programs for practical application and it was shown that the proposed approach has a good potential and offers a valuable tools to performance evaluation for metal cutting system.

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A Study on a Knowledge-Based Design System for Chip Encapsulation (반도체 칩의 캡슐화 성형을 위한 지식형 설계시스템에 관한 연구)

  • 허용정;한세진
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.2
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    • pp.99-106
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    • 1998
  • In this paper, we have constructed an expert system for semiconductor chip encapsulation which combines a knowledge-based system with CAE software. The knowledge-base module includes heuristic and pre analysis knowledge for evaluation and redesign. Evaluation of the initial design and generation of redesign recommendations can be developed from the rules as applied to a given chip package. The CAE programs can be used for simulating the filling and packing stage of encapsulation process. The expert system is a new tool which enables package design or process conditions with high yields and high productivity.

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A Research on Improvement of Usability Testing Techniques for the Military Logistics Software (군수 정보체계 사용성 평가 기법개발에 관한 연구)

  • Um, Tae-Woong;Park, K.S.;Kim, Sang-Soo
    • Journal of the Korea Institute of Military Science and Technology
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    • v.8 no.4 s.23
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    • pp.77-84
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    • 2005
  • In this research, usability testing techniques had been applied to currently operating Military Logistics System software, and the effects of improvements made were verified. Furthermore, this research aims to assist the army to execute their researches on usability testing in the future. Various usability testing techniques and guidelines presented in this paper will be easily adapted to the research environment of the army. Consequently, the results of this research would play an important role in future development and evaluation of the Military Logistics System software.

Reference String Recognition based on Word Sequence Tagging and Post-processing: Evaluation with English and German Datasets

  • Kang, In-Su
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.5
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    • pp.1-7
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    • 2018
  • Reference string recognition is to extract individual reference strings from a reference section of an academic article, which consists of a sequence of reference lines. This task has been attacked by heuristic-based, clustering-based, classification-based approaches, exploiting lexical and layout characteristics of reference lines. Most classification-based methods have used sequence labeling to assign labels to either a sequence of tokens within reference lines, or a sequence of reference lines. Unlike the previous token-level sequence labeling approach, this study attempts to assign different labels to the beginning, intermediate and terminating tokens of a reference string. After that, post-processing is applied to identify reference strings by predicting their beginning and/or terminating tokens. Experimental evaluation using English and German reference string recognition datasets shows that the proposed method obtains above 94% in the macro-averaged F1.

A Knowledge-based Design System for Injection Molding

  • Huh, Yong-Jeong
    • Journal of the Microelectronics and Packaging Society
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    • v.8 no.3
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    • pp.11-17
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    • 2001
  • The design and manufacture of injection molded polymeric parts with desired properties is a costly process dominated by empiricism, including the repeated modification of actual tooling. This paper presents an expert design evaluation system which can predict the mechanical performance of a molded product and diagnose the design before the actual mold is machined. The knowledge-based system synergistically combines a rule-based expert system with CAE programs. Heuristic knowledge of injection molding is formalized as rules of an expert consultation system. The expert system interprets the analytical results of the process simulation, predicts the performance, evaluates the design and generates recommendations for optimal design alternatives.

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Usability Principles for Augmented Reality Applications in Education

  • Al-Obaidi, Arwa;Prince, Master
    • International Journal of Computer Science & Network Security
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    • v.22 no.1
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    • pp.49-54
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    • 2022
  • It is challenging to select appropriate technology in education to interact with students in today's digital world. Especially when the technologies used at home on smart devices like tablets and mobile phones are very advanced, on the other side, it may be more challenging to find sharing technology in the classroom. One of the ways is to use new technologies like Augmented Reality (AR). The current study aims to develop usability principles for the development and evaluation of education using AR technology applications. We develop usability principles for AR applications by analyzing existing research about heuristic evaluation methods, design principles for AR systems.